Window-scaffold.



Nrrnn STATES PATENT FFICE..

JAMESV T. SAUNDERS, OF WORCESTER, MASSACHUSETTS.

WIN DOW-SCAFFO LD.

` SPECIFICATION forming part of Letters Patent No. 672,515, dated April 23, 1901.

` Application filed August 3| 1900. Serial No. 25,763. (No modeln i To all whom t may concern:

i to be a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and use the same. f

`This invention relates to window seats or scaffolds in general, and more particularly to that class employed in the washing of windows, glazing, and other work about the eX- terior of a window, one object of the invention being to provide a simple and efcient construction that will `be applicable to wini dows of different dimensions and which may ,j i 2o be readily applied and removed.

A further object is to provide a construction wherein `the scaffold will be effectively held against displacement when in operative position.

InV the drawings, forming a portion of this l specification, and in which like numerals of reference indicate similar parts in the several views, Figure l is `a perspective view of the complete scaffold in the position it assumes' when in operation.` Fig. 2 is a side elevation of the scaold, the railing being shown as folded down against the body of the scaffold. Fig. 3 is a section on line 3 3 of Fig. 1, show- -ing a portion of the railing broken away. Fig. 4 is a sectional view taken through one of the supports and an adjacent portion of the body and showing the clamping mechanism.

j Referring now to the drawings, the scaffold of the present invention consists of a body portion 5, which is formed of one or more boards and is preferably rectangular in outline, as shown, this body portion being adapted to rest upon the inside sill of the windowframe and having hooks 6, which project downwardly therefrom for engagement over the inner edge of the inner sill of the frame to prevent the inner end of the bodyu from gitudinal slots 1.2 therein, through which 'plates 10 and 11.

are passed outwardly bolts 13, the heads of which lie against the inner faces ofthe plates. An adjustable support 13', which is slotted longitudinally, is disposed against the outer face of each of the plates and 11 with the bolts 13 passed through the slots thereof, and each of the plates or supports 13 has a cam 15 on its outer face, through which the bolt is passed. The cams 15 are not fixed to the supports, but have lugs which engage the slots thereof slidably, and mounted also on the bolts are additional cams 16,'having handles 17, by means of which they may be 0scillated to engage the cam-faces of the cams 15, and thus clamp the supports against the The outer faces of the plates l0 and 11 are corrugated, and the inner faces of the supports 13 have corrugations for engagement with those of the plates to hold the clamping-faces positively against movement. The lower ends of the supports 13 are recessed, as shown, to fit overu the outer corners of Ihe lower outside sill of a window, the supports being adjustable by means of the mechanism just described to hold the body 5 horizontal.

To prevent outward movement of the board 5, plates are set into the upper face thereof and adjacent its inner end, each of these plates having an upwardly-projecting ear 22 and the several ears having alining perforations. A bar or rod 23 is engaged iixedly with the perforation of the innermost ear 22, while tubes 25 and 26 are slidably engaged with the perforations of the outermost ears, said tubes being slipped over the ends of the rod or bar 23, whereby said tubes may be moved telescopically inwardly to lie with their ends within t-he inclosure of the periphery of the board 5 or may be projected beyond the sides of the board, as may be preferred. When the board is in place in a window, the tubes 25 and 26 are drawn outwardly to lie against the inner faces of the sides of the window-frame, and thus prevent outward movement of `the scaffold.

To guard the outer end of the scaffold, a U shaped frame 30 has its ends pivoted to the sides of the board 5 adjacent its outer end, and pivoted to the sides of this frame are toggle-links 31, having additional links 32 pivoted to their opposite ends, the links 32 be- IOO ' thehooks are engaged with the inner sill of tice various modifications ofthe specific con.-

A any circumstances,` andfor this purpose `the are formed perforated ears 43 and 44, with ling in turnpivotedto ears 33 upon Ihe plates "from the spirit of the'inven-tion.

1 used in washing w-indows or a bucket for painting or for holding any other similar re- 10 and 11. The links 32 have transverse slotstherein, disposed inwardly of the pivotal connections thereof with the links 3l, and the adjacent extremities of the links 31 are bent to engage these slotsand prevent pivotalmovement of the links in one direction, while permitting them to be folded in the opposite direction.

In order to hold the cams of the clamps or supports 13' at different points of their adjustments, ahreaded perforation is formedz. in the cam of the handle 17 ateach side of the board 5, and this perforation is adapted to register with a series of perforations in the outer. face of cam 15, and withthe perforation in the cam A16 is engaged a screw '35, which when turned inwardly may be'bronghtintoengagement with anyone of the perforations in the cam '15 to hold the cams in their adj ustedpositions. The pin or screw is prevented from f loss by aflexible connection 36,Which'is connected therewith and with a ring upon the,` cam 16.'

TWhen the apparatus is to be used,theguard rail is raised "to the position shown in Fig. ,1,

the window-frame,`and the supports are justed to hold the board 5 horizontal.

It will of coursebe understoodthat in prac struction shown vmay be made and that any suitable vmaterials and proportions vmay be used for the various parts without departing y Also it will i be understood lthat instead of using a ba-r or rodthe part' 23 may be a pipe or tube, and, in fact, 'in practiced prefer a pipe to a rod.` I' As shown Vin the drawings', there is provided a holder for holding a pan for water vceptacle that it may be desired to use under holder `is positioned -to hold the receptacle over the edge of the body 5. The holder comprises two members 40 and 41, the ymember 40 being` attached by screws 0I' Otherwise to the body 5, While the member 41 is pivoted tothe member 40. This member 40 includes a handle portion, which is attached directly to the body 5 and which projects beyond the edge thereof, the projecting portion being bifurcated and shaving its outer end bent downwardly, as shown at 42, `the slot of the bifurcation extending inwardlybeyond the downwardlybent portion. On the upper faces of the bifurcations of the memberv 40 which is engaged apivot-pin 45 for vthe second member 41. This second member 41 com- `member 40.

prises a handle portion 46, the forward portion of which is narrowed, as sho-wn at 48to pass through the slot of bifurcation ofthe member 40, and this narrowed portion has the pivot-pin passed through it. Below the Vmember40th@ member 41 is broadened. to form a jaw 49, which cooperates with the jaws at the extremities of the bifurcations of the Thus if member 41 be moved pivotally its jaw will be moved toward and away from the coperative jaws and may be engaged with a :pan `or other receptacle.

To hold the jaws lin their engagingl position, the member 41 has a slot 50 in its'handle portion, and through this slot is passed a bolt 51, which is passed downwardly' through va perforation inthe member 40and the body 5 and has a thumb-11111152 a-t-its lower end, bymeans of which `the bolt maybe drawn downwardly to operate the clamping-jaws and to hold them in their clamping positions.

`Vlhat is claimed is-.

11. A scaffold comprising a *board having hooks at one end for engagement over a sill, adjustable supports connec-tedwith the sides of the board to rest upon a lower sill ,and support the board horizontal, and a telescopic bolt" -mou nted upon't'lleiboard at its inner end I and adapted for projection to lie against the inner face of a window-frame.

2, A scaffold comprising a 'board Vhaving hooks for engagement over the inner edge of la sill, slotted and corrugated plates u ponthe sides of the board, slotted supports 'having corrugations for engagement `with those of lthe plates means for clamping the supports usf-ably to theplates, and a'telescopic bolt mountedupon the board and adapted for rojection beyond the sides thereof to lie against the inner face of a window-frame.

3. A scaffold comprising a board havingl rail 'comprising a U-shaped framepivoted at its ends tothe board, and toggle-levers piv voted `to the sides of the frame and to the board, one `link of each lever. having atransverse slot to receive the laterally-turned end ofthe other linkto prevent pivotal movement ofthe links in one direction.

AIn testimony whereof 'I hereunto sign my name,1in the presence of two subscribing witnesses, on vthis '10th day of July, 1900.

v JAMES T. SAU'NDERS. v

Witnesses:

`J. WALTER FLAGG,

ARTHUR FLAGG.

IOO

IIO 

